Dynamo-electric machine.



vEfD. PRIEST.

DYNAMO ELEGTRIO MACHINE.

APPLICATION FILED AUG. 12, 1910.

1 ,O 1 4,904, Patented Jan. 16, 1912.-

Witn'esses: r'sventor'zz Priest,

Edward. M

"each field coil.

s'rarns PATENT oFFrcE.

EIDWABD D. PRIEST. F SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

DYNAMIC-ELECTRIC MACHINE.

application filed August 12, '1910.

Specification of Letters Patent.

'lilachines, of which the following is a specilication.

My invention relates to dynamo electric machines, and more particularly to means for supporting the field coils of such ma- .zhines and has for its object a construction which holds the field coils securely in place The various features of novelty which characterize my invention are pointed out with particularity in the claims annexed to and forming a part of this specification.

For a full understanding of my invention, reii'erencc may be had to the following description. taken in connection with the acconu iz inying drawing, in whichigure 1 is a perspective view of a field coil mounted on a pole piece and held in place by my support, Fig. 2 is a sectional view of a Field coil .in the process of assembly with my support, and Fig. 3 is a perspective view or my support.

ltoterring to the drawing, 1' is the frame of a dynamo electric machine, to which field magnet poles 2-are fastened. Each of these poles has a main portion 3 and pole tips 4. I have shown these poles as being made of laminations riveted together and fastened to the frame by means of bolts Field coils 3 surround. the poles and are held in place by supports 7. The supports 7 are flanged plates, that is, they have two portions bent at an angle to each other, the angle being prefe ably less than 90 degrees. They are made of resilient. material, such as tempered steel. One of these portions may have its ends bent, as'shown at '8 in the drawing. I prefer to use two of these supports with These supports are placed on the opposite sides of a coil (land then the pole 2 is inserted. These supports thus protect the wit during the process of assembly from any damage which the sharp corners of the pole might cause if they were i said plate ad acent to the main portion of not present. The pole is then drhwn into place by the bolts The portions of the support between the'pole tips and the coil tend to press the col-ls toward the frame, and

1 ;l protects the field coils when the pole pieces are being placed in position.

, portion of the poleand also away from the the portions of the support between the main part of the pole and coil tend to press the coil away from this part of the pole. It will thus be seen that these plates act as supports for the coil and keep it rigidly in place bV forcing it against the frame and away from the sides of the poles. By bending the ends 8 of one portion of the supports they are prevented from any endwise motion which 'ould tend to injure the coil. By bending these ends at an angle greater than 90 degrees, as shown in Fig. 3, they may be used to prevent any endwise motion of the coil and thus the coil will be supported in every direction.

My invention is particularly applicable to a railway motor, but. it is evident to those skilled in the art that itmay be used advantageously on any dynamo electric machine.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. In combination with the frame of a dynamo electric machine, a field pole, a field coil'therefor, and a resilient plate having two portions bent at an angle to each other, said portions engaging the sides of the coil so as to tend to press said coil away from said pole and toward said-frame.

2. In combination with the frame of a dynamo electric machine, a field pole, a field coil therefor, and a resilient plate having two portions bent at an angle to each other, said portions engaging the sides of said coil so as to tend to press said coil away from said pole and toward said frame, one of said portions having its ends bent about said pole so as to keep said plate in place.

3. In combination with the frame of'a dynamo electric machine, a field pole having a main portion and pole tips, a field coil therefor, and a resilient flanged plate tending to press said coil away from the main portion of the pole and also away from the pole tips toward said frame.

4. In combination with the frame of a dynamo electric machine, a field pole having a main portion and pole tips, a fieldcoil therefor, and a resilient flanged plate tending to press said coil'away from the main pole tips toward said frame, the portion of the pole having its ends bent about said pole so as to keep it in place.

5. In combination with the frame of a dynamo electric machine, :1

portions bent at an angle in each ov'her, said angle bemg less than 90 degrees, said plate tending -to press said cell away from the main portion of the pole and also away from the pole tips toward said frame.

' 6. In combination with he frame of a dynamo electric machine, a field pole having a main portion and pole tips, a field coil therefor, and s. resilient plate having two portions bent at an angle to each other field pole having .a mam portion and pole Ups, :1 field c011 therefor, and. a I'BSlilQIlil plate hzwmg two omeoe.

said angiebeing less than 96 deg-gyms, portion of the piaive -&Ci:fi 3611' 6' iio i512 portion of the pole having its eivci about said, pole, Saki plate tending; so said coil away fears the poriion pole aiso away from ti1e"poie tips Ward 531d frame;

In Witness whereof i have hereunto my hand this lOih (My of August, 12 10.

EDWAR-K) D.

fWitnesses 2 M BENJAMIN B. HULL,

'HELEN @RFORD, 

